Mill-roll-cooling device



Patented Dec. 1, 1925..

UNiTED sTATEs 1,564,111 PATENT oFFicEgw- .A 'BOY W. BROWN, 0l' AKRON,OHIO, ASSIGNOB T0 THE IIRESTONE TIRE AND RUBBIB OOIPAIY, F AKRON, OHIO,A OOBPORATON 0l' OHIO. v

mBOmCOOI-im@ i DEVICE.

application mea my is, ma. semi in. esiaa.

To aU whom it may concern:

vBe it known that I, Ror W. BiiowN, a citizen of the United States, anda resident of Akron, county of Summit, State of Ohio, have inventedcertain-new and useful Improvements in Mill-Roll-Cooling Devices, ofwhich the following is a specification.

This invention relates to a devicefor cooling mill rolls. The inventionis herein shown as embodied in a standard roll such as used on calendarsand mixing mills, but is likewise applicable to rolls of other types ofmachines, and the term roll, as hereinafter used for convenience, is tobe understood as referring in genera-l to any standard mill roll used ina machine wherefthere -is a tendency on the part .of the roll tobeeomeheated and in which a cooling system is required to lower thetemperature thereof. It has been proposed heretofore, to' provide acoolin system on mill rolls w ch consists in irecting a stream of waterthrough the center of the roll. This stem has many marked disadvantageswhic are readily apparent. ilow of the heat is from the outer surface ofthe roll inward throu h the roll .toward the center. In the o inarymethod of cooling, the layer of water next to the inner surface of theroll becomes hot and in accordance with a well known law of physicsremains practicall stationary, while the fresh coo1 water will lowstraight' through the roll withontmixing with or disturbing the heatedlayer, and consequently providing little, if any, cooling eect on the'roll. Furthermore, the placid condition of the roll contacting la er ofwater will -result in a deposition o sediment upon the surface of theroll which will eventually clog ther water passage completely. c

An important obiect, among othersnof this invention is to rovide a noyelcoohng -device for mill ro s so orgamzed as to create a countercirculation of the fresh water with relation to the hot water in therolls, resulting in aviolent agitation of the water.

As contributing to the improved` results in the operation of mill rothis invention lprovides a cooling device in w ch the heated ayer ofwater is removed from the inner surface of the roll and fresh cool watersubstituted in place thereof. In accordance It will be understood thatthev -12 is a conveyin pipe 18 arraneed central] a aced with a furtherfeature of this invention, the fresh water is impinged with a hi hvelocity against theinner periphery of t e roll in such a manner as toautomatically clean all sedimentary deposits and scale therefrom,

A further feature of the invention consists in a novel organization of acooling device which will greatly reduce the amount of water ordinarilyconsumed and will allow the use of cooling water of a highertemperature.

These and other features of the invention will appear m ore fully fromthe following detailed description when read in connection with thelaccompanying drawings and will be pointed out in the appended claims.

In the drawin A Figure is a side elevation of a mill with the rolls incross-section, showing the cooling device in position. t

Fi 2 is a ction of oneof the rollls illustrating the cooling devicetherein; an

Fi 3isacross-section on the line3-3 of Figure 2.

I n its generalaspects, the machine selected to illustrate my inventionconsists -of a plurah of cast iron rolls 2 having an annular opening 4therein and being rovided with reduced be ends 6 suitab y mounted instandards 8 o the machine. Each end of the roll 2 is closed by aconventional stuing box 10 held in place by suitable cap screws.

Extending throu the stuing boxes at each end of the ro is a two-bore ipe-12, a water inlet pipe 14 and an out et pipe 16. Screwed into the inletbore of the pipes of. the roll 2, ing provid t sp points with apertures20 and closed midway of its len by a stop 21, if desired.

Mount upon the pipe 18 and arranged to enclose the apertures 20 thereinare a plurality of venes 22, each of which com- .prises a convergingnozzle 24 which is substantially tangential to the inner surface 26ofthe roll. Thebea 28 of the nozzle surrounds the'pipe 18 an is split toallow the vane tobe adjusted circumferentiall ofthepiasetscrewwservingtohold the vane in adjusted 'tion.'

vFrfoin the above eeeription, it will be clear that with the roll 2rotatin in the direction of the arrow (Figure 3), t e fresh water willbe directed by the nozzles in the opposite direction, thus causing thelayer of hot water which has a tendency to hug Vthe inner surface of theroll, to be broken and allowing the fresh water to come into contactwith the roll surface to produce the desired cooling effect thereon.

Connectin the vanes and formed integral with one wa l thereof are blades32 having the same curvature as the vanes, the outer edge of the bladesextending closegto the surface of the roll and serving to direct the hotwater away from the surface thereof. The hot water will thus be turnedtoward the center of the roll due to the contour of the bladesand'willpass out of the outlet bore of the pipe 12 and be carried awayby.

the pipe 16.

By the arrangementof parts described, circulation of the water contra tothe direction ofthe roll will be effected, the combined action of thenozzles 24 and blades 32 resulting in a violent a 'tation and a thoroughmixing of the hot an cold water.

Moreover, the convergence of the nozzles toward the outlet end willcause the water to be directed against 'the inner surface of the rollwith considerable force suiicient to thoroughly clean the surface of theroll and effectively prevent the ac'cumulation of an sedimentarydeposits thereon.

gince the manner in which the different parts of the cooling deviceoperate to perform their function has been set forth in connection withthev detailed description of' the device, no further description of theoperation is necessary for an understanding o the invention.

Having described the invention, what I claim as new anddesire to secureby Letters Patent of the United States is:

1. A device for cooling a roll having an annular opening thereincomprsin ymeans for conducting a cooling liuid mto opening, and meansfor directing the fluid against the inner surface of the roll and contrato the direction of rotation of the roll.

2. A device for cooling a mill roll having` an annular central openingtherein, comprising means for conducting a fluid into the opening, andmeans for forcibly impingin the fluid against the inner surface of thero and contra to the direction of rotation of the roll.

3. A device for cooling a mill roll having an annular central o ningtherein comprlsing means for con ucting a fluid into the opening, meansfor directing the uid against the 1nner surface of the roll, and meansfor removing the fluid from said surface.

4. A device for cooling a roll having` an annular central openingcomprising means for conducting a cooling fluid into said opening, meansfor directing the iiuid against the inner surface of the roll, and meansfor turning theuid toward the.center of the opening.

5. A device lfor cooling a roll havin an annular central opening thereincomprlsing means for conducting acooling fluid into said opening, and avane havin a converging nozzle or impin ing the uid against the'innersurface of t e roll.

6. A device for cooling a roll having an annular central opening thereincomprisin means for conducting a cooling fluid into sai opening, and aplurality of vanes connected to said conducting means for directing thefluid against the 1nner surface of the roll.

7. A device for cooling a roll having an annular central opening'therein comprlsing means for conducting a cooling u1d into said opening,and a vane having a nozzle substantiall tangential to the inner surfaceof the roll or directing the Huid against the surface of the roll.

8. `A device for cooling a roll havin an annular central opening thereincomprising means for lconducting a cooling iluld into said opening, anda vane havin a converging nozzle for directing the llui against theinner. surface of the roll, said nozzle being sulblstantially tangentialto the surface of the ro 9. A device for cooling a roll having anannular central opening therein com rlsing means for conducting acooling iuld into said opening, said conductingmeans being apertured atspaced points, and a plurality of vanes surrounding said apertures andconstructed and arranged to direct the uid against the inner surface ofthe roll.

10. A device for coolin a roll having an annular central opening t ereincomprising a pipe for conducting a fluid int'o the opening, said pipebeing apertured at s aced pomts, vanes connected to said pipe ansurrounding said apertures, and means for adjusting the .vanescircumferentially of the pipe.

11. A device for coolin a roll having an annular central .opening-terein comprising means for conducting a cooling fluid into said opening,means for directing the fluid against the inner surface of the roll, andmeans forremoving the fluid from said surface, said removin meansincluding a wiping plate supporte by the conducting means and extendingclose to the inner surface of the wall. v

12. A device for coolinga mill roll having an annular` central openingtherein compris ing means for conducting a cooling fluid into saidopening, -means to direct the fluid against the 1nner surface of theroll and means for removing the fluid from sai surface, said meansincluding a curved wiping plate arranged substantially tangential to thcinner surface 0f the 1'011.

1?. A device for cooling a roll having an annular central openingtherein, comprising means for conducting a cooling fluid into .saidopening, said means being apertured at spaced points` a plurality ofvanes enclosing said apertures and having converging nozzles arrangedsubstantially tangential to the inner surface of the roll for directingthe l0 tiuid gainst the inner surface of the roll and contra to thedirection of rotation there of` and means attached to said Yanes forremoving the fluid from the surface of the roll and directing it towardthe center of the opening.

ROY WV. BROWN.

